Surface characteristics of boron rich cubic boron nitride

Details Surface characteristics of boron rich cubic boron nitride Surface characteristics of boron rich cubic boron nitride

B - Operations, Transporting

24

D

149/12, 57/15

B24D 3/14 (2006.01)

Patent

CA 1181329

IMPROVEMENT IN THE SURFACE CHARACTERISTICS OF BORON RICH CUBIC BORON NITRIDE Abstract of the Disclosure Boron rich cubic boron nitride suitable for use in electroplating processes (e.g., nickel plating) has been made by an acid leaching process. Boron rich aggregated cubic boron nitride grinding grits are leached in a mixture of nitric and sulfuric acids, the following conditions being typical: (a) volume ratio of 67% nitric acid to 98% sulfuric acid of 10:20; (b) temperature of 250°C; and (c) for a time of 1 hour. The process removes sufficient free surface boron to reduce the conductivity at the surface, resulting in an abrasive which does not overplate.

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